American engineers have invented a robot that is powered by hydrogen and moving like a jellyfish through the water. Development of the robot “Robojelly” is in the early stages, but researchers hope that the robot can later be used in underwater rescue operations. Jellyfish’s way of swimming is just the perfect model for the vehicle, because of the fact it is powered by hydrogen in theory means you will never run out of fuel. Let’s just wait and see what this robot will be used for, for now they say rescuing operations, but what crosses my mind are some underwater surveillance things… But, let’s just wait.